
# 不愧是年轻有为的专家，两份一模一样的情报可以确定敌人正在准备一场战争，我们潜伏在H先生秘书身边的情报人员近日又提供了一份加密文件，看来我们又要加班了……
text = "Mr. H and Mr. M had a long confidential conversation about the first step of the war. Mr. H believes that we should start from Country B, and we have already started preparing"
ascii_codes = [ord(char) for char in text]
print(ascii_codes)

encodes = [ element-3 for element in ascii_codes]
print(encodes)